Fossil fuels
Starter
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BURNING
CAPROCK
CHEMICAL
COAL
ENERGY
FIRE
FOSSILS
FUEL
HEAT
HEAT
LIGHT
OIL
PETROL
REMAINS
SMOKE
| F | K | K | C | O | R | P | A | C |
| G | O | I | L | T | A | E | H | S |
| N | F | S | M | O | K | E | C | N |
| I | T | I | S | S | M | E | O | I |
| N | H | J | R | I | N | W | A | A |
| R | G | M | C | E | L | V | L | M |
| U | I | A | R | Q | N | S | O | E |
| B | L | G | F | U | E | L | B | R |
| Z | Y | D | P | E | T | R | O | L |
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